According to reports from sources close to the situation, Penn and Kate del Castillo are in the sights of Mexican authorities who wish to find out more about El Chapo, and where the interview between them actually took place.

Penn, whose piece was published by Rolling Stone on Saturday, claims he went hours and hours into the deep Mexican jungle to reach El Chapo:

"We embark into the dense, mountainous jungle in a two-truck convoy, crossing through river after river for seven long hours. As the elevation begins to climb, road signage announces approaching townships. And then, as it seems we are at the entrance of Oz, the highest peak visibly within reach, we arrive at a military checkpoint. Two uniformed government soldiers, weapons at the ready, approach our vehicle. Alfredo [Guzman, El Chapo's son] lowers his passenger window; the soldiers back away, looking embarrassed, and wave us through. Wow. So it is, the power of a Guzman face. And the corruption of an institution."